1 definition by Train449

Top Definition
Expression used to mimic the diction and inflection of Cantonese. The long O and short A can be held for as long as the speaker sees fit. The intended effect is mainly for humor, invoking the image of a asian person vociferously expressing displeasure. Actual words presumably mean nothing.
Person 1: Hey sorry I'm late; were you waiting long?
Person 2: Do-Mah!
by Train449 September 27, 2010

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